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https://issues.apache.org/jira/browse/UIMA-4899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Epstein reassigned UIMA-4899:
------------------------------------
Assignee: Edward Epstein
> UIMACPP access violation in destroyJNI()
> ----------------------------------------
>
> Key: UIMA-4899
> URL: https://issues.apache.org/jira/browse/UIMA-4899
> Project: UIMA
> Issue Type: Bug
> Components: C++ Framework
> Affects Versions: 2.8.1SDK
> Environment: Windows 10 64bit
> Reporter: Benjamin De Boe
> Assignee: Edward Epstein
> Priority: Major
>
> When running a bunch of threads accessing separate AE instances of the
> UIMACPP DaveDetector in JNI mode, the process crashes with an access
> violation on the call to "delete pInstance" in destructorJNI in jni/jni.cpp.
> The code below should allow you to reproduce the issue and takes three
> command-line arguments:
> 1: the full path to DaveDescriptor.xml
> 2: whether to use simple threads ("n") or separate processes ("y")
> 3: (optional, default 20) size of the CAS pool to use, which we found out has
> an impact in reproducing the issue.
> /*
> * To change this license header, choose License Headers in Project
> Properties.
> * To change this template file, choose Tools | Templates
> * and open the template in the editor.
> */
> package com.intersys.uima.test;
> import java.io.File;
> import java.net.URL;
> import java.net.URLClassLoader;
> import org.apache.uima.UIMAFramework;
> import org.apache.uima.analysis_engine.AnalysisEngine;
> import org.apache.uima.cas.CAS;
> import org.apache.uima.resource.ResourceSpecifier;
> import org.apache.uima.util.CasCreationUtils;
> import org.apache.uima.util.CasPool;
> import org.apache.uima.util.Level;
> import org.apache.uima.util.XMLInputSource;
> /**
> *
> * @author bdeboe
> */
> public class Standalone implements Runnable {
> private String text;
> private AnalysisEngine ae;
> private CasPool pool;
> public Standalone(String txt, AnalysisEngine ae, CasPool pool) {
> this.text = txt;
> this.ae = ae;
> this.pool = pool;
> }
> public static void main(String[] args) throws Exception {
> String descPath = ((args != null) && (args.length > 0)) ? args[0] :
> "C:\\InterSystems\\UIMA\\bin\\DaveDetector.xml";
>
> if ((args != null) && (args.length > 1) && (args[1].charAt(0) ==
> 'y')) {
> async(descPath);
> return;
> }
>
> int casPoolSize = ((args != null) && (args.length > 2)) ?
> Integer.valueOf(args[2]) : 20;
> XMLInputSource in = new XMLInputSource(descPath);
> ResourceSpecifier specifier
> = UIMAFramework.getXMLParser().parseResourceSpecifier(in);
> AnalysisEngine ae = UIMAFramework.produceAnalysisEngine(specifier);
> CasPool pool = (casPoolSize > 0) ? new CasPool(casPoolSize, ae) :
> null;
> String loremIpsum = "Lorem ipsum dolor sit amet, consectetur
> adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna
> aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris
> nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in
> reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
> Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia
> deserunt mollit anim id est laborum.";
> for (int i = 0; i < 25; i++) {
> Standalone task = new Standalone(loremIpsum,
> UIMAFramework.produceAnalysisEngine(specifier), (casPoolSize > 0) ? pool :
> null);
> Thread t = new Thread(task);
> t.start();
> }
> }
> public static int async(String descriptor) throws Exception {
> String javaHome = System.getProperty("java.home");
> String javaBin = javaHome
> + File.separator + "bin"
> + File.separator + "java";
> //String classpath = System.getProperty("java.class.path");
> URL[] urls = ((URLClassLoader)
> Thread.currentThread().getContextClassLoader()).getURLs();
> StringBuilder classPath = new StringBuilder();
> for (URL url : urls) {
> classPath.append(url.getPath()).append(";");
> }
> System.out.println(javaBin.concat(" -cp
> ").concat(classPath.toString()).concat("
> ").concat(Standalone.class.getCanonicalName()).concat("
> ").concat(descriptor));
> ProcessBuilder builder = new ProcessBuilder(
> javaBin, "-cp", classPath.toString(),
> Standalone.class.getCanonicalName(), descriptor);
> builder.redirectErrorStream(true);
> builder.redirectOutput(ProcessBuilder.Redirect.INHERIT);
> Process[] processes = new Process[4];
> processes[0] = builder.start();
> processes[1] = builder.start();
> processes[2] = builder.start();
> processes[3] = builder.start();
> int done = 0;
> do {
> Thread.sleep(1000);
> done = 0;
> for (int i = 0; i < 4; i++) {
> if (!processes[i].isAlive()) {
> done++;
> }
> }
> System.out.println(String.valueOf(done).concat(" processes
> done"));
> } while (done < 4);
> return processes[3].exitValue();
> }
> @Override
> public void run() {
> CAS cas = null;
> try {
> if (pool != null) {
> cas = pool.getCas();
> } else {
> cas =
> CasCreationUtils.createCas(ae.getAnalysisEngineMetaData());
> }
> UIMAFramework.getLogger().log(Level.WARNING, "created CAS in
> thread ".concat(String.valueOf(Thread.currentThread().getId())));
> cas.setDocumentText(text);
> ae.process(cas);
>
> System.out.println("Done processing text");
> } catch (Exception e) {
> e.printStackTrace();
> } finally {
> if (pool != null) pool.releaseCas(cas);
> }
> }
> }
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